By Киффер Р.
Киффер Р. - Твердые сплавы (Перевод с немецкого)
Подробно рассмотрены структура и прочностные свойства металлокерамических твердых сплавов. Дано подробное описание новых коррозионностойких, окалиностойких твердых сплавов. Рассмотрены возможности применения боридов, нитридов, силицидов и т. д. в качестве высокотемпературных материалов.
Предназначена для инженерно-технических и научных работников твердосплавной промышленности, а также для работников отраслей народного хозяйства, широко применяющих твердосплавные инструменты (горнорудная промышленность, машиностроение и т. п.). Может быть полезна студентам, аспирантам и преподавателям вузов.
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Additional resources for Твердые сплавы
It is a statement that the volume removed from the work is the volume swept out by the cutting edge. In turning, the volume removed per unit time is fdUwork. The distance that the cutting edge sweeps through the work in unit time is simply Uwork. 1a) is obvious. 1a) Milling There are many variants of the milling process, described in detail by Shaw (1984) and Boothroyd and Knight (1989). 3 shows face milling (and could also represent the end milling process). A slab is reduced in thickness by an amount dA over a width dR by movement at a linear rate Ufeed normal to the axis of a rotating cutter.
It has been imagined that the tool is stationary and the plate moves towards it, so that the cutting speed (which is the relative speed between the work and the tool) is described by Uwork. In each example, Uwork is the same but the tool is oriented differently relative to the plate, and a different geometrical aspect of chip formation is introduced. This figure illustrates these aspects in the most simple way that can be imagined. Its relationship to the Childs Part 1 28:3:2000 2:35 pm Page 38 38 Chip formation fundamentals Fig.
1(a)). He gave an opinion that for the construction of the best form of tools and for determining the most suitable depth of cut (we would now say undeformed chip thickness), the minute examination of the cuttings is of the greatest importance. He was aware that fine cuts caused more plastic deformation than heavier cuts and said this was a driving force for the development of more powerful, stiffer machine tools, able to make heavier cuts. ). Three years later, Lord Rayleigh presented to the Royal Society of London a paper by Mallock (Mallock, 1881–82).